I have used a few location extensions in the past and they worked well, but what is great about JSP Location is how flexible it is. You can use dropdown filters, locate me, or zip code search radius to find locations. Most of the other extensions only had one of these options. Also the extension has great customization and even lets you set custom fields for locations if you need. Most importantly though, I needed a little custom JS and functionality done and they gave me the code and knowledge needed via the support forum within 24 hours of the first post! Great support, great extension.